Storm door assembly

Abstract

A storm door assembly for a doorway to a building comprises a frame configured for hinged mounting at a doorway of a building. The frame comprises an opening through the frame, the opening comprising a depth and at least two channels disposed in parallel around an inner surface of the depth. At least two removable frame inserts are provided, each comprising a front surface, a rear surface, and an insert perimeter comprising a plurality of recesses positioned about the perimeter. A plurality of twisting cams are each disposed within one of the plurality of recesses and not extending beyond the front and rear surfaces, and the at least two frame inserts are each held in a fixed position with respect to the frame via placement of the twisting cams within the at least two channels.

1. A storm door assembly for a doorway to a building, the storm door assembly comprising:
 a frame configured for hinged mounting at a doorway of a building, the frame comprising an opening through the frame, the opening comprising a depth and at least two channels disposed in parallel around an inner surface of the depth; 
 at least two removable frame inserts each comprising a front surface, a rear surface, an insert perimeter comprising a plurality of recesses positioned about the perimeter and a groove disposed along the insert perimeter and located between the front surface and the rear surface, each of the plurality of recesses comprising an opening through the front surface and a corresponding annular opening through the rear surface that is concentric with the opening through the front surface; 
 a plurality of twisting cams each comprising a pivot extending from a rear side of the twisting cam, wherein each of the plurality of twisting cams is disposed within one of the plurality of recesses such that the pivot of each twisting cam mates with the annular opening of the respective recess and a front portion of each twisting cam extends into the corresponding opening through the front surface; 
 wherein the at least two frame inserts each held in a fixed position with respect to the frame via placement of the twisting cams within the at least two channels. 
 
     
     
       2. The storm door assembly of  claim 1 , wherein the at least two frame inserts are stackable so that the front surface of a first insert of the at least two inserts is in contact with and substantially coextensive with the rear surface of a second insert of the at least two inserts within the depth of the frame when held in its fixed position with respect to the frame. 
     
     
       3. The storm door assembly of  claim 1 , wherein the at least two channels are disposed concentrically around the inner surface of the frame depth. 
     
     
       4. The storm door assembly of  claim 1 , wherein the at least two channels are coextensive with the perimeter of the opening through the frame. 
     
     
       5. The storm door assembly of  claim 1 , wherein the at least two channels comprise one or more discrete, non-contiguous channels. 
     
     
       6. The storm door assembly of  claim 1 , wherein the opening of each of the plurality of recesses comprises a penannular opening through the front surface into the groove at the perimeter. 
     
     
       7. The storm door assembly of  claim 6 , wherein the groove is coextensive with the insert perimeter. 
     
     
       8. The storm door assembly of  claim 6 , wherein the groove comprises one or more discrete, non-contiguous grooves. 
     
     
       9. The storm door assembly of  claim 6 , wherein the plurality twisting cams disposed within the plurality of recesses are each rotatably coupled within the groove of the at least two frame inserts. 
     
     
       10. The storm door assembly of  claim 9 , wherein the one or more twisting cams rotate coplanarly with respect to the one or more frame inserts. 
     
     
       11. The storm door assembly of  claim 1 , wherein the plurality of twisting cams each comprises an engagement tab. 
     
     
       12. The storm door assembly of  claim 11 , wherein the engagement tab comprises a resilient deformable engagement structure. 
     
     
       13. The storm door assembly of  claim 12 , the engagement tab further comprising a rounded engaging surface opposite the resilient deformable engagement structure. 
     
     
       14. The storm door assembly of  claim 11 , wherein an engaging surface of the engagement tab is rounded. 
     
     
       15. The storm door assembly of  claim 11 , wherein the engagement tab is rotatable between an unlocked position and a locked position, wherein in the unlocked position the engagement tab is contained within the groove of its respective insert and in the locked position at least a portion of the engagement tab extends from the groove of its respective insert.